(JOHN)

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History of the Atom (5pts)
  1. JJ THOMSON AND JOHN DALTON
    • Find out the important experiments that were used to make breakthrough discoveries.
  2. http://www.visionlearning.com/library/module_viewer.php?mid=50
    Thomson's notion of the electron came from his work with a nineteenth century scientific curiosity: the cathode ray tube. For years scientists had known that if an electric current was passed through a vacuum tube, a stream of glowing material could be seen; however, no one c ould explain why. Thomson found that the mysterious glowing stream would bend toward a positively charged electric plate. Thomson theorized, and was later proven correct, that the stream was in fact made up of small particles, pieces of atoms that carried a negative charge. These particles were later named electrons.
    • Include years of each discovery/experiment so we can get an idea of how long this process has taken.
  3. During the 19th Century



Atomic Structure (5pts)

For a bonus point:
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